Blowpipe for heating tools



June 14; 1949. c, LUZADER, 5 2,473,435

BLOWPIPE FOR HEATING TOOLS 7 Filed Sept. 21, 1946 Inventor WWW PatentedJune 14, 1949 STATES PATENT OFFICE BLOWPIPE FOR HEATING TOOLS Bert C.Luzader, Sr., Jonesboro, La.

Application September 21, 1946, Serial No. 698,555

2 Claims. 1

This invention relates to new and useful improvements and structuralrefinements in blow pipes, and the principal object of the invention isto provide a device of the character herein described, such as may beconveniently and effectively employed for heating soldering irons,preheating furnaces and for other similar uses.

A further object of the invention is to provide a blow pipe which issimple in construction, highly efficient in operation, and which willnot easily become damaged.

Another object of the invention is to provide a blow pipe which embodiesin its construction means for supporting the soldering iron with whichit is used.

An additional object of the invention is to provide a blow pipe whichwill readily lend itself to economical manufacture.

With the above more important objects in view, and such other objects asmay become apparent as this specification proceeds, the inventionconsists essentially of the arrangement and construction of parts asillustrated in the accompanying drawings, in which:

Figure 1 is a perspective view showing the invention in use.

Figure 2 is a longitudinal cross sectional view of the invention per se,and

Figure 3 is a cross sectional view, taken substantially in the plane ofthe line 3-3 in Figure 2.

Like characters of reference are used to designate like parts in thespecification and throughout the several views.

Referring now to the accompanying drawings in detail, the inventionconsists of a blow pipe designated generally by the reference characterill, the same embodying in its construction two longitudinally alignedsections of pipe H and I2 constituting a tubular body designated by theref erence character l3. The section II is closed at one end thereof asat M, while its remaining end is provided with a baffle plate l5perforated as at it.

One end of the section 12 is open as at IT, while its remaining end isformed with a flange l8, whereby the section 12 is secured to the platel5 of the section H by means of suitable bolts and nuts l9.

The interior of the section H forms an air chamber 2B, while theinterior of the section l2 forms a combustion chamber 2|. An air supplyline 22, provided with a control valve 23 extends through the closed endI of the section II and communicates with the air chamber 20, as will beclearly apparent from the accompanying drawings. A gas line 24, equippedwith a control valve 25, also enters the chamber 20 through the closedend l4 and extends longitudinally therein, the free end portion of thetube 24 constituting what may be referred to as a Venturi tube 26. Itwill be noted that this Venturi tube extends through the bafile plate l5into the combustion chamber 2 I, as is best shown in Figure 2.

The lateral wall of the pipe section I2 is also provided with aplurality of auxiliary air openings 21. The body I3 is supported in aninclined position, that is, with the chamber 2| elevated with respect tothe chamber 20, by means of suitable brackets 28 and 29, the formerassuming the form of a simple shank secured adjacent the closed end ofthe section II, while the latter is arcuated as shown in Figure 3 and issecured by means of a substantially U-shaped clamp 30 to the body l3. Ineffect, the clamp 30 spans or straddles the bafile plate l5 and theflange l8, and is rigidly secured thereto by means of one of theaforementioned bolts [9.

Means are also provided for supporting a soldering iron 3| at the openend l1, that is, at the mouth of the chamber 2!, said means consistingOf a substantially Z-shaped bracket, or a reverse angle bracket 32. Oneof the free arms of this bracket is secured to another of the bolts l9as will be clearly apparent from the accompanying drawings, while theremaining free arm of the bracket is forked as at 33 to receive theshank or shaft of the soldering iron.

When the invention is placed in use, the air pressure in the chamber 20will be relieved through the openings or passages l6, therebyfacilitating efficient combustion of the gas from the tube 26in thechamber 2 l It is believed that the advantages and use of the inventionwill be clearly understood from the foregoing disclosure andaccordingly, further description thereof at this point is consideredunnecessary.

While in the foregoing there has been shown and described the preferredembodiment of this invention it is to be understood that minor changesin the details of construction, combination and arrangement of parts maybe resorted to without departing from the spirit and scope of theinvention as claimed.

What I claim as my invention is:

1. A blow pipe comprising two longitudinally aligned sections separablyconnected together and constituting a tubular body, a perforated baffleplate interposed between the adjacent ends of said sections, one of saidsections being closed at the free end thereof and forming an airchamber, the remaining section being open and forming a combustionchamber, an air supply tube communicating with said air chamber, a tubehaving a venturi positioned axially in said body and extending throughsaid plate into said combustion chamber, said Venturi tube adapted to beconnected to a source of gas, a control valve provided on each of saidtubes, the lateral wall of said combustion chamber being formed with aplurality of openings, brackets for supporting said body, and a furtherbracket attached to said baflle plate and adapted to support a solderingiron at the mouth of said combustion chamber.

2. A blow pipe comprising two longitudinally aligned sections separablyconnected together and constituting a tubular body, a perforated baiileplate interposed between the adjacent ends of said sections, one of saidsections being closed at the free end thereof and formin an air chamber,the remaining section being open and forming a combustion chamber, anair supply tube communicating with said air chamber, a gas sup-REFERENCES CITED The following references are of record in the v file ofthis patent:

UNITED STATES PATENTS Number Name Date 320,461 Cowen June 23, 1885585,641 Dupee June 29, 1897 1,329,641 Stahlman Feb. 3, 1920 1,915,056Fichter June 20, 1933

